'Antifreeze' Protein, Borrowed From Ticks, Could Battle Frostbite

If you live in a cold climate, some days any exposed skin is at risk of frostbite. But if we had antifreeze coursing through our veins, we’d be resistant to winter’s bite.

And that’s not as crazy as it sounds. Scientists have recently demonstrated that mice, genetically engineered to produce an antifreeze protein, are better able to fight off frostbite. Although other animals have this survival skill, it’s the first time it’s been replicated in a mammal.
Biological Thermostats
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